Eutrophication occurs when excess nutrients, primarily nitrogen and phosphorus, stimulate excessive algal growth in a water body. This process can lead to oxygen depletion, harmful algal blooms, and loss of biodiversity.
The risk of eutrophication depends on several physical and chemical characteristics of the lake or reservoir, such as its size, depth, water residence time, and temperature. Larger, shallow lakes with long residence times retain nutrients longer, increasing the likelihood of algal over‑growth.
By combining these measurable parameters into a single index, managers can quickly assess the vulnerability of a water body and prioritize mitigation actions like nutrient load reductions or aeration.
T = residence time (days)
A = surface area (km²)
D = average depth (m)
Temp = water temperature (°C)
What is eutrophication?
How does lake size affect eutrophication risk?
What role does water residence time play in eutrophication?
How can temperature impact eutrophication?
What are the consequences of eutrophication?
How can I reduce the risk of eutrophication in a lake or reservoir?
Is there a specific calculator for eutrophication risk assessment?
Results are for informational purposes only and do not constitute professional advice.